Nymphargus siren
family: Centrolenidae
subfamily: Centroleninae

© 2005 Natural History Museum, The University of Kansas (1 of 1)

Country distribution from AmphibiaWeb's database: Colombia, Ecuador, Peru

View distribution map using BerkeleyMapper.

Conservation Status (definitions)
IUCN (Red List) Status Vulnerable (VU)
See IUCN account.
Other International Status None
National Status None
Regional Status None


From the IUCN Red List Species Account:


Range Description

This species occurs on the Amazonian slopes of the eastern Andes in Napo Province, Ecuador (at elevations of 1,310-1,700m asl) and in Ayacucho Province, southern Peru. The Peruvian specimens might refer to a distinct species (Duellman and Schülte, 1993). A similar form occurs in Putumayo Department, Colombia; however, further collections are required for taxonomic confirmation of this population (Mueses-Cisneros, 2005).

Habitat and Ecology

It lives near streams in pre-montane forest (Lynch and Duellman 1973; QCAZ database). It lays its eggs on vegetation, and the tadpoles develop in the water.


In Ecuador, it has disappeared from the type locality (Río Salado) and several other localities, but one specimen was seen in Azuela in 1998.

Population Trend


Major Threats

Habitat destruction and degradation is a threat to this species, due mainly to the activities of smallholder farmers and as a result of logging. Given its narrow altitudinal range, its decline in Ecuador might be related to the impacts of climate change.

Conservation Actions

It occurs in the Reserva Ecológica Cayambe-Coca in Ecuador.


Luis A. Coloma, Santiago Ron, Diego Cisneros-Heredia 2010. Nymphargus siren. In: IUCN 2014


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